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PLOT and DRAW in machine codeHow do you go about it? If I posted a really simple BASIC instruction could someone do a machine code routine so I could learn from it? I wouldnt k…
If you just wanted to put some points and lines on the screen, Damian Scattergood explained exactly how to use the ROM routines in 2 half pages in Sinclair User:
[url]http://www.worldofspectrum.org/showmag.cgi?mag=SinclairUser/Issue075/Pages/ ... -
WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …
... Y=0
125 REM DRAW VERTICAL LINES
130 FOR ... X=0
185 REM DRAW HORIZONTAL LINES
190 FOR H ... PLOT 0,175
270 DRAW 255,-175
275 REM ... ,0
300 DRAW 0,175
310 DRAW -255,0
320 DRAW 0,-175
filled shape creating codeDevelopment is continuing well on a resurrected project of mine from about 20 years ago. Speed and size optimizations are going well along with displ…
... side of a shape and draw horizontal lines straight across. But it ... to the bottom, filling each horizontal line between the straight edge ...Dynamite Dan II - Island 6 - HELP!Hi all, can someone possibly create a snapshot of Island 6 (car park island) on Dynamite Dan II for me please? I'm trying to work out why half the…
... /> ;$fe=draw horizontally
;$fd=draw vertically
;$fc=draw mirror image ... br /> ;bit 5 set = draw every other column
; ...Robospec (new project, hopefully useful as a tutorial as well)Starting a new project after my graphics investigations. * It's gonna be a Robotron clone since that's not too ambitious (although I'd like to hav…
... start with drawing a line (horizontal, vertical or diagonal) pointing in ... things first, I need to draw horizontal, vertical and diagonal lines of ...How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…
... to write a simple BASIC* horizontal scrolling game[/b]
... to write a simple BASIC* horizontal scrolling* game.
... !
*) Well, the horizontal scrolling part isn't in ... br />
First, we will draw a player on screen:
Horizontal scrollDoes anyone know how to do a 2 or 4 pixel left or right horizontal scroll of the spectrum screen. I can make a 1 one pixel scroll with: ... rl (hl…
... 4 pixel left or right horizontal scroll of the spectrum screen ...Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... 0 ;NO. OF COLUMNS TO DRAW (FIRST BLOCK)
;draw four more columns
... br />
* Draw end of row
* If ... br /> * necessary to draw one more tile (right ... LD A,E ;reset the horizontal screen
AND 224 ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... that makes it easy to draw and animate sprites and ... />
2. The display draw order has changed. In splib2 ... this reason your program should draw sprites first before doing background ... column required in splib2 for horizontal pixel placement of sprites is ...Complex DRAW command?After looking at some Speccy code I noticed that the DRAW statement is used to draw lines (or it looked that way). On the Coco, the LINE command was…
... noticed that the DRAW statement is used to draw lines (or it ... command was used to draw lines and the DRAW statement was completely ... position isn't updated after draw)
B = blank (move but ... don't draw)
"U8R8D8L8" would draw a square 8 ...horizontal shmupsare there any speccy horizontal shmups where you freely move your ship (or whatever) pixel-by-pixel except penetrator? (i?m glad to realize, the lack…
are there any speccy horizontal shmups where you freely move ...IN 255 behaviour not emulated in Spectaculator and ZXSpinI'm not speaking about "normal" IN 255 behaviour. All of you know what I'm taking about: IN 255 can be used to "read" screen data as it's retrieved f…
... memory by the ULA to draw the screen. This has been ... syncronize a program with the horizontal retrace.
Last weekend ...Draw (x1,y1) to (x2, y2)?I was never very good at math. :( Given the above variables, what should I do to draw a line between the two pixels? How do I calculate the values fo…
... , what should I do to draw a line between the two ... I calculate the values for DRAW?
I thought it ... />
PLOT x1,y1
DRAW ????.????
I've seen ...wanna draw zx graphics :)Is anybody looking for a zx graphics ? I would like to help with graphics if there are projects that need it. Here is an example of a sprite (may be …
PitPatI am coding the digital version of PIT-PAT [IMG]http://www.berg-en-dal.be/images/thumb/pitpat_spelen_2_kleur.jpg[/IMG] In fact it is golf on a tabl…
... on:
Level must have horizontal and vertical lines only
DRAW commands and a PRINT AT ...Oooh! Good draw!England has come up trumps with the World Cup 2010 draw. We're in group C, playing against USA, Slovenia and Algeria. I think it's pretty safe to say…
England has come up trumps with the World Cup 2010 draw. We're in group C, playing against USA, Slovenia and Algeria. I think it's pretty safe to say that we won't be knocked out of the 1st round :DHow works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…
... related to the draw rom subroutine. The Line-Draw require two sets ... show a working example to draw a line in asm ? because ...DRAW x,y,a Algorithm - how does the ROM do it?Hi all, Getting on with SpecOS, and one of the things I would love to do is to preserve the original ROM's behaviour when drawing Arcs. This is don…
... . This is done by using DRAW x,y,a where the ... provide an example of the DRAW command implemented in BASIC - but ... be clear, I can already draw bezier curves (and therefore, so ...A fast DRAW routineI was investigating how to speed up the line drawing for the [URL="http://www.worldofspectrum.org/forums/showthread.php?t=20225"]BASIC compiler[/URL]…
... CODE]
; ---------------------------------------------------------------------
; DRAW using Bresenham's algorithm and ... ; ---------------------------------------------------------------------
;; DRAW PROCEDURE
PROC
< ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... struggling with the concept of horizontal movement.
If you ... right, do you:
Draw your sprite 3 squares wide ...Drawing 3D grids in Basic...This is probably very simple for someone who feels comfortable with Math, but it's driving me crazy... Let's say I want to draw a grid of 16 by 16 s…
... 's say I want to draw a grid of 16 by ... 15.93 : PLOT b,0 : DRAW t-b,88 : LET t ... so that I can draw the 16 horizontal lines? How do I ...Oceans 'Melbourne Draw+' utility and MOREWas this preserved? I thought I had all my microdrives from Ocean salvaged but I don't seem to remember this being put on WOS? It's Melbourne Draw bu…
... on WOS? It's Melbourne Draw but with stuff bolted on ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... coordinate
uchar dx; // signed horizontal speed in pixels
uchar ... with some arbitrary patterns, and draw it.
void loadlevel()
SEUD - How to - Part IOK, a few weeks ago, I bought my copy of SEUD to make my first game on the Spectrum after 26 years! :) I'm learning it yet, but I'll show to you my a…
... of the game (vertical or horizontal), you will create the waves ... that we choose, we must draw our ships and fire bullets ...What's wrong with this code ?OK, working my way through Jonathan Cauldwells 'How To' tome and I can't get the following to run in either spin or basin. ( iused the assembler in b…
... ld a,(ply) ; player's horizontal position.
rst 16 ; set ... the horizontal coord.
ret
... 'A'.
rst 16 ; draw player.
ret
< ...BIFROST* Advanced Programming - part 1In BIFROST*, it's much easier to just make changes in the tile map and let the engine automatically draw & animate everything in multicolor for you. …
... let the engine automatically draw & animate ... their coordinates;
[*]Draw them all again.[/LIST]< ... [NUM_TILES]; // hi-res horizontal tile position
int ... NUM_TILES]; // hi-res horizontal tile movement
int ...BIFROST* Advanced Programming - part 2This second demo shows animated and moving tiles together, and also how to implement collision detection. This knowledge should be enough to implemen…
... erase" (routine BIFROST_fillTileAttrH) or "draw" (routine BIFROST_drawTileH) there will ... col[NUM_TILES]; // hi-res horizontal tile position
int dlin ... /> }
// move and draw tiles
for (f = 0 ...BIFROST* Advanced Programming - part 3This new demo demonstrates the BIFROST* built-in sprite support that I mentioned before. In BIFROST*, "sprite tiles" are 2 special tiles that BIFROS…
... program won't have to draw 2 tiles anymore, thus ... and sprite tile 2 to draw the player:
[CODE]/* ... /> int colEnemy, colPlayer; // hi-res horizontal tile position
int dlinEnemy ...BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…
... choose a different tile to draw.
In ... hrc[NUM_TILES]; // hi-res horizontal tile position
int dlin ... }
// move and draw tiles
for (f = 0 ... takes twice as long to draw;
...
